#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main()
{
    int n = 0;
    scanf("%d", &n);
    if ((n % 4 == 0 && n % 100 != 0) || n % 400 == 0)
    {
        printf("yes");
    }
    else
    {
        printf("no");
    }
    return 0;
}